The Raven Skull of Korvaad

Once per turn, when resolving an attack made by a model from your army with this Relic, you can re-roll the hit roll, wound roll or damage roll. In addition, if a model from your army with this Relic is destroyed as a result of an attack made by an enemy unit, then until the end of the battle, when resolving an attack made by a friendly RAVEN GUARDunit against that enemy unit, add 1 to the hit roll